[电子] 宽带放大

Splendid! He kept his telescopic cameras carefully aimedglued to their moving objective; 精彩片他小心地调着望远摄影机的镜头,盯紧了那移动着的对象。 clapped on a higher power to get a close-up of the frantic and distorted

发表于:2018-12-07 / 阅读(152) / 评论(0) 分类 美丽新世界

EXPLORATIONS - The History of the Laser Welcome to EXPLORATIONS in VOA Special English. Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one of the best examples of how technology can

发表于:2018-12-16 / 阅读(163) / 评论(0) 分类 2013年VOA慢速英语(二)月

BBC News with Julia Candler. A senior member of North Koreas government has warned that his country would react with a pre-emptive nuclear strike if it saw signs that the US was preparing to launch an attack. Speaking to the BBC, the Vice Foreign Min

发表于:2018-12-20 / 阅读(177) / 评论(0) 分类 中英双语新闻

This is Scientific American's 60s Science. I'm Karen Hopkin. This will just take a minute. Think about the tools used by biologists, perhaps test tubes and microscopes come to mind. But what about diapers? No, it's not the investigators in their work

发表于:2018-12-24 / 阅读(235) / 评论(0) 分类 2015年Scientific American(一)月

band, [bnd] n 带,条纹=strip;乐队;v 联合 【例】jazz band 爵士乐队We banded together against the robbers 我们联合起来对付强盗。 【类】stipple:dot=striate:band 有点的由点组成=有条纹的由条纹组成

发表于:2018-12-30 / 阅读(190) / 评论(0) 分类 不择手段背单词

In my lab, we recently made a cancer nanodetector 在我的实验室,我们最近研制出了一种癌症纳米检测器, that is so small that it could travel into the body and look for tumors. 小到可以进入全身血液循环并寻找肿瘤。

发表于:2019-01-03 / 阅读(184) / 评论(0) 分类 TED演讲科学篇

PCRthe polymerase chain reactionis a crucial tool. The DNA amplification technique is used in genome sequencing, forensics and the diagnosis of various diseases. To give researchers more genetic material to work with, a PCR instrument repeatedly heat

发表于:2019-01-08 / 阅读(177) / 评论(0) 分类 Scientific American(十)月

This is Scientific American 60 Second Science, I am Karen Hopkin, this will just take a minute. Every year, about 10 million tons of paper winds up in American landfills and incinerators, which is not only wasteful but adds CO2 to the atmosphere. Rec

发表于:2019-01-08 / 阅读(173) / 评论(0) 分类 Scientific American(三)月

The History of the Laser Welcome to EXPLORATIONS in VOA Special English. Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one of the best examples of how technology can go from the sci

发表于:2019-01-12 / 阅读(228) / 评论(0) 分类 2013年VOA慢速英语(五)月

EXPLORATIONS - The Laser: Futuristic Science Found at Your Local Store MARIO RITTER: Welcome to EXPLORATIONS in VOA Special English.Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one

发表于:2019-01-12 / 阅读(195) / 评论(0) 分类 2012年VOA慢速英语(一)月

'Word on Street' Impacted Language in 2011 While 2011 is over, some of the words that came to define the past year are still very much with us, and may be for years to come. Since 2011 was an especially busy year for grassroots political action, many

发表于:2019-01-13 / 阅读(141) / 评论(0) 分类 VOA标准英语2012年(一月)

Because of course, the ear is, I mean, subject to all sorts of things. 这当然是因为,我是说,耳朵受制于很多因素。 The room we happen to be in, the amplification, the quality of the instrument,the type of sticks...etc., etc. 我们现

发表于:2019-01-18 / 阅读(151) / 评论(0) 分类 TED演讲国际问题篇

Welcome to EXPLORATIONS in VOA Special English. Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one of the best examples of how technology can go from the science of the future to eve

发表于:2019-01-24 / 阅读(248) / 评论(0) 分类 英语语言学习

By Paul Sisco Washington 14 November 2007 At the McDonald Observatory in western Texas, a unique space program has been quietly underway for more than 30 years. It is called the Lunar Laser Ranging Program. VOA's Paul Sisco has more. Research scienti

发表于:2019-01-31 / 阅读(206) / 评论(0) 分类 VOA常速英语2007年(十一月)

Nobel in Physics for Controlling Laser Light 诺贝尔物理学奖颁给激光控制实验者 The main practical application of CPA so far has been in the eye surgery. It was the first one, and I think it is the one that is used by the most people fo

发表于:2019-02-14 / 阅读(231) / 评论(0) 分类 2018年科学美国人10月

音乐咖啡厅:Westlife - Wide Open 相关介绍 :城男孩自1998年成军至今十四年,以动人情歌打开全球乐迷的心房,细腻和声与完美默契,让西城男孩持续写下乐坛奇迹:英国金榜「最多连续夺下冠军

发表于:2019-02-19 / 阅读(248) / 评论(0) 分类 音乐咖啡厅

简单清爽的民谣,歌中唱到no rich man's worth his weight in dust. They'll bury them down same as they do us. God wants us busy, never giving up. He wants nothing but the whole wide world for us. 我们手中,都有一个世界的重量,要

发表于:2019-02-20 / 阅读(241) / 评论(0) 分类 天籁音乐

两者均可用作副词,区别如下: 区别1 wide用作副词主要表示张大睁大到最大程度,侧重指物体从一边到另一边的距离(联系其形容词用法),通常与wide, apart等连用。如: Open your mouth wide. 把口

发表于:2019-02-21 / 阅读(194) / 评论(0) 分类 英文语法词汇

The Revolution in American Higher Education To produce the upheaval in the United States that changed and modernized the domain of higher education from the mid 1860's to the mid 1880's, three primary causes interacted. The emergence of a half dozen

发表于:2019-02-25 / 阅读(198) / 评论(0) 分类 双语有声阅读

金属:Blessthefall - With Eyes Wide Shut 相关介绍 :起初听说Belssthefall时,我以为这是一支福音摇滚乐队,便开始有些抱怨。因为不喜欢那种整张专辑都是对于上帝的赞美之词,似乎上帝本身完美无缺

发表于:2019-03-13 / 阅读(281) / 评论(0) 分类 英文摇滚歌曲
学英语单词
absorption factors
abstainments
acroceras macrum
actual assets
aircraft tire
anisamide
antiallergic agent
archipenko
bending formula
Ceratocephalus
chlamydiasis
clefture
coeswrench
Conistonite
convolute lamination
cortical alexia
course push
dappen dish
dappler
deeply-etched
delegations
denhallows
deoxygenated water
Dholera
diphyodont dentition
discovery-oriented
downstream floating of log raft
E. L.
eletrified-particle gun
enit
enjo kosai
execution dance (iran)
field archaeology
folles
fresh fish
gain turn down
General Conference on Weights and Measures
half-period strips
have a thin time
hawsewood
hematogenic calcic pericementitis
heterogenous
inbuilt
insect biophysics
interlinked tension
K-T extinction event
keep (a reactor)subcritical
keeping and handling expenses
large number of grasshoppers
laughing gulls
leaf roll disease
locomotive running depot
lower hybrid drift instability
manless reconnaissance equipment
multitube pressure gauge
mutlaq
mutual constraint of variational form
non operating expenses
ordinary linkage
Peucedanum acaule
power take-off shaft clutch
pragnell
prunus pensylvanicas
puppy disease
raben
radioautograph
railway bridge
range-sweep
reach in refrigerator
reactor safety evaluation
regional tutorial services
residual nucleus
Robinobiose
rotor winding machine
running balance statement of account
rushville
sacrifice stage
safe-hold
scaling dimensionality
shop chart
shunted state of a track circuit
single colour offset press
social trends
standard general markup language
standby oil pump
stone-bruise
swim like a brick
swinging hopper
tachometer drive quill
the east indies
thrub
tie-clips
tranque
unobservable subspace
value-added carrier
Vesicaria
west indian mahogany
wood sugar waste
wrawled
xyriss